Iimpahla zangaphantsi zizinto ezinxitywa ngaphantsi kweengubo zangaphandle, ngokuqhelekileyo zidibana ngokuthe ngqo nolusu, nangona zingabandakanya ngaphezu komgangatho omnye.Basebenza ukugcina iimpahla zangaphandle zingangcoliswa okanye zonakaliswe kukukhutshelwa komzimba, ukunciphisa ukukhuhlana kwempahla yangaphandle eluswini, ...
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